tietgenskolen.dk is a .dk domain served by 2 nameservers (lucy.ns.cloudflare.com, micah.ns.cloudflare.com). It was registered on 22 December 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 135.181.157.200 is hosted by Hetzner Online GmbH (AS24940) in Finland. Mail is handled by tietgenskolen-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 135.181.157.200 | 300s | static.200.157.181.135.clients.your-server.de | AS24940 | Hetzner Online GmbH | 135.181.0.0/16 | 🇫🇮 Finland | Helsinki |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.149.136 |
| TXT Record |
|---|
| v=spf1 include:outlook.com include:servers.mcsv.net ?all |
| Policy | Record (tietgenskolen.dk) |
|---|---|
| ?all (neutral) | v=spf1 include:outlook.com include:servers.mcsv.net ?all |
| Policy | Record (_dmarc.tietgenskolen.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:8dc5cf8c8936450d9d64dfeb7c94685f@dmarc-reports.cloudflare.net,mailto:dmarc_agg@vali.email |
| www CNAME | tietgenskolen.dk (all on tietgenskolen.dk) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 3/10 · policy: ?all
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2417734355 |
| Primary NS (MNAME) | lucy.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2000-12-22 |
| Expires | 2026-12-31 (69d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-21 12:02:50 shown | 2033ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-20 05:23:53 | 2366ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-18 03:44:09 | 1334ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 03:57:47 | 953ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-07 11:35:55 | 1974ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 00:22:08 | 890ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-06 21:45:36 | 1508ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 18:14:45 | 987ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-20 02:05:58 | 1805ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-09 17:32:45 | 1440ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-08 15:40:08 | 2429ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-18 11:14:19 | 3433ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-12 11:06:23 | 17293ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 16:51:19 | 2172ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 07:31:45 | 745ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 02:47:27 | 1953ms | 2 NS 1 A 1 MX | 🔒 Secure |